Debt Instrument, Convertible, Number of Equity Instruments Per Contract

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- Definition

Summary Of Significant Accounting Policies [Line Items]

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- Definition

Tangible Equity Units, Rate

+ References

No definition available.

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- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257

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- Definition

Amount after tax of increase (decrease) to equity or (increase) decrease to net assets, resulting from the cumulative effect adjustment of a new accounting principle applied in the period of adoption.

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- Definition

Threshold period of specified consecutive trading days within which common stock price to conversion price of convertible debt instrument must exceed threshold percentage for specified number of trading days to trigger conversion feature.

+ References

No definition available.

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- Definition

The aggregate fair value amounts of derivative instruments that contain credit-risk-related contingent features that are in a net liability position at the end of the reporting period. For nonderivative instruments that are designated and qualify as hedging instruments, the fair value amounts are the carrying value of the nonderivative hedging instrument, including the adjustment for the foreign currency transaction gain (loss) on that instrument.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4H
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624258-113959

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- Definition

Amount of cash inflow from realized tax benefit related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 20
-Section 55
-Paragraph 24
-URI http://asc.fasb.org/extlink&oid=109196918&loc=d3e11374-113907

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- Definition

Amount of cash outflow for realized tax benefit related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes.

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Summary Of Significant Accounting Policies (Narrative 2) (Details) $ in Thousands	3 Months Ended		12 Months Ended
	Dec. 30, 2017 shares	Jul. 02, 2016 trade_day shares	Sep. 29, 2018 USD ($) trade_day shares	Sep. 30, 2017 USD ($) shares	Oct. 01, 2016 USD ($) shares	Sep. 30, 2018 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Tangible equity units, rate			8.75%
Antidilutive securities excluded from computation of earnings per share, amount (in shares) \| shares			584,000	726,000	673,000
Foreign exchange contracts with credit-risk related contingent features			$ 0	$ 0
Equity Component [Member]
Summary Of Significant Accounting Policies [Line Items]
Consecutive trading days \| trade_day		20	20
Minimum [Member] \| Common Class A [Member] \| Equity Component [Member]
Summary Of Significant Accounting Policies [Line Items]
Number of equity instruments per contract (in shares) \| shares	1.9841	1.9841	1.9841
Maximum [Member] \| Common Class A [Member] \| Equity Component [Member]
Summary Of Significant Accounting Policies [Line Items]
Number of equity instruments per contract (in shares) \| shares		2.3810	2.3810
Accounting Standards Update 2016-09 [Member]
Summary Of Significant Accounting Policies [Line Items]
Excess tax benefit from share-based compensation, operating activities				208	$ 187
Excess tax benefit from share-based compensation, financing activities				$ 208	$ 187
Scenario, Forecast [Member] \| Accounting Standards Update 2014-09 [Member]
Summary Of Significant Accounting Policies [Line Items]
Cumulative effect of accounting change						$ (7,000)
Retained Earnings [Member] \| Accounting Standards Update 2016-09 [Member]
Summary Of Significant Accounting Policies [Line Items]
Cumulative effect of accounting change			$ (33)
Retained Earnings [Member] \| Accounting Standards Update 2018-02 [Member]
Summary Of Significant Accounting Policies [Line Items]
Cumulative effect of accounting change			640
Additional Paid-In Capital [Member] \| Accounting Standards Update 2016-09 [Member]
Summary Of Significant Accounting Policies [Line Items]
Cumulative effect of accounting change			33
AOCI Attributable to Parent [Member] \| Accounting Standards Update 2018-02 [Member]
Summary Of Significant Accounting Policies [Line Items]
Cumulative effect of accounting change			$ (640)